Abstract
We present measurements of charge transfer and the photovoltaic effect in a blend of the alternating polyfluorene copolymer poly(2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)) with branched CdSe nanoparticles. Quasi-steady-state photoinduced absorption measurements identified a long-lived charged species that formed after photoexcitation at room temperature. Photovoltaic devices based on this blend system showed a spectral response extending to 650 nm and gave a solar power conversion efficiency of 2.4% under Air Mass 1.5 Global (AM1.5G) conditions.
Publication types
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Evaluation Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Cadmium Compounds / chemistry*
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Cadmium Compounds / radiation effects
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Electric Power Supplies*
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Electrochemistry / instrumentation*
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Electrochemistry / methods
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Electron Transport
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Energy Transfer
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Equipment Design
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Equipment Failure Analysis
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Fluorenes / chemistry*
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Fluorenes / radiation effects
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Light
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Nanostructures / chemistry*
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Nanostructures / radiation effects
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Nanotechnology / instrumentation
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Nanotechnology / methods
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Photochemistry / instrumentation*
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Photochemistry / methods
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Selenium Compounds / chemistry*
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Selenium Compounds / radiation effects
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Solar Energy*
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Static Electricity
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Transducers
Substances
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Cadmium Compounds
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Fluorenes
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Selenium Compounds
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fluorene
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cadmium selenide